Machine for making- railroad-chairs



' UNITED sTATEs PATENT oEEreE.

ROBERT ARCHER, OF RICHMOND, VIRGINIA.

MACHINE FOR MAKING RAILROAD-CHAIRS.

Speccation of Letters Patent No. 17 ,773, dated July 14, 1857.

To all whom it may concern:

Be it known that I, ROBERT ARCHER, of the city of Richmond, in the State of Virginia, have invented a new and Improved Mode for Making Wroughtdron Railroad- Ohairs and I do hereby declare that the following is a full and exact description of the construction and operation of the same, reference being had to the annexed drawings of a -rst elevation of the machine, making a part of this specification.

The nature of my invention consists in a east-iron frame, supporting two parallel shafts, rotatin back and forth by means of two spurwhee s marked C. On the end of each of these shafts are aliXed east steel or chilled iron knives or euttersA for cutting the lips of the chain, and about the middle of each shaft is affixed a cast-iron swage B moving by the action of the shaft in the are of a circle. Between these two swages the plate,

after the lips have been cut and bent down at an angle of about 90 degrees on the mandrel, is placed and the lips accurately bent down and swaged upon the mandrel. The chain thus formed is placed under a drop or hammer and accurately straightened.

Attached to the machine is a system of levers D for eentralizing and adjusting the chain plate, when placed on the mandrel, resting on the support at H so as to insure uniformity in the lengths of the lips, irrespective of the length of the plates.

What I claim as my invention, and desire to secure by Letters Patent, is-

The use 0f the swages B constructed and operating in the manner specified and operating in connection with the adjusting levels D whereby uniformity in the length of the lips is secured without reference to the length of the plate.

R. ARCHER.

Witnesses:

FRANCIS T. GLASGOW, ROBERT S. ARCHER. 

